Added sheep dyeing
You can no longer color with wood
Fixed compilation
STR_Warrior was right.

Simplified code.
Fixes (SEE DESC)

Entity metadata is broadcasted.
If player is in survival, his equipped item is removed.
If you have green dye, and sheep is green, your equipped item won't be removed.
Merge pull request #330 from tonibm19/patch-1

Added sheep dyeing